Serendipity: On a different wavelength
Simon Singh is an author, journalist and TV producer, specialising in science and Mathematics. His latest book is "Trick or Treatment? Alternative Medicine on Trial", co-authored with Edzard Ernst, the world’s first professor of complementary medicine.
Sunday 26 September 1999
One day in 1946, he was experimenting with a magnetron, an electronic device that emits microwaves. While sitting next to the magnetron, Spencer felt a warm, moist sensation in his pocket - a peanut snack bar had melted. Immediately, he realised that microwaves might have the potential to cook food. He sent for some popcorn kernels, placed them next to the magnetron, and then watched as they popped. The next day he experimented with an egg, which began to quiver as the heat and pressure built up inside. When a colleague leant forward to take a closer look, there was an explosion, and he literally ended up with egg on his face. The first commercial microwave oven was sold just one year later.
Microwaves have continued to have a serendipitous history, as illustrated by the story of the British engineer Bill Lucas, who made the fortuitous mistake of letting his tea go cold. He popped his cup in the microwave, with cat-astrophic results. Sparks danced wildly around the cup, because it had a gold rim. As most people know, you should never put metal in a microwave oven, since the sparking can be dangerous to the user and damaging to the oven.
Lucas worked at The Welding Institute near Cambridge, and wondered if the sparks that he had witnessed could be harnessed for welding. Metal effectively focuses microwaves, just as a glass lens focuses light, and it was not long before he had constructed a microwave welding machine. The advantage of his prototype was the machine's efficiency, because just as microwave cookers use less energy than conventional cookers, microwave welding seems to use less energy than conventional welding.
I first came across Bill Lucas when he appeared on Tomorrow's World back in 1992, successfully demonstrating his prototype microwave welder live in the studio. Contrary to the popular myth, his invention did not sink without trace, but has since gone from strength to strength. When I spoke to Bill last week, he told me that a German company, Widos, is now manufacturing and selling microwave welding systems.
Simon Singh is the author of 'The Code Book - the Science of Secrecy from Ancient Egypt to Quantum Cryptography', Fourth Estate, pounds 16.99
Watch the new House of Cards series three trailerTV
Oscars 2015It was the first time Barney has compered the Academy Awards
Oscars 2015 From Meryl Streep whooping Patricia Arquette's equality speech to Chris Pine in tears
Oscars 2015 Mexican filmmaker uses speech to urge 'respect' for immigrants
TV ReviewThe intrigue deepens as we delve further but don't expect any answers just yet
Razzies 2015 Golden Raspberry Awards 'honours' Cameron Diaz and Kirk Cameron
Arts & Ents blogs
- 1 Bill Clinton portrait features Monica Lewinsky reference, artist admits
- 2 What happens to your body when you give up sugar?
- 3 Delhi bus rapist blames dead victim for attack because 'girls are responsible for rape'
- 4 Have sex with your iPad thanks to the new sex toy no-one asked for
- 5 Average penis size revealed: Scientists attempt to find what is 'normal' to reassure concerned men
Poldark star Heida Reed says show is not that racy: 'I don't think a single bodice gets ripped'
Historian: ‘Disney was right to show King John as a villain' in Robin Hood
Glastonbury 2015: Coldplay will not headline but Florence Welch might play, says Emily Eavis
Game of Thrones season 5 spoilers: What we can expect according to George RR Martin's books
Fifty Shades of Grey movie shows first sex scene 'after 40 minutes'
New theory could prove how life began and disprove God
'Jihadi John': CAGE representative storms off Sky News accusing Kay Burley of Islamophobia
This is what it's like to be dead, according to a guy who died for a bit
Durham Free School: 'Creationism taught at' free school facing closure
Ukip would cut billions from Scottish budget to fund English tax cuts
Nearly 100,000 of Britain's poorest children go hungry after parents' benefits are cut